When your Dell Latitude 7490 laptop computer begins performing up, it may be irritating. However earlier than you surrender and take it to an expert, there are some things you’ll be able to attempt to repair it your self. One frequent problem is a defective battery, which may be simply changed. One other frequent problem is a clogged fan, which may be cleaned with a can of compressed air. Should you’re feeling slightly extra adventurous, you’ll be able to even attempt to change the exhausting drive or the RAM.
On this article, we’ll present you the best way to take aside your Dell Latitude 7490 laptop computer as a way to carry out these repairs your self. We’ll present step-by-step directions with clear pictures, in order that even newcomers can comply with alongside.
Earlier than you start, be certain to energy down your laptop computer and unplug it from any energy sources. You must also take away any exterior gadgets, equivalent to a USB drive or a mouse. As soon as you’ve got accomplished that, you are prepared to begin taking aside your laptop computer.
Important Instruments and Precautions
Earlier than embarking on the disassembly of your Dell Latitude 7490, it’s essential to collect the suitable instruments and observe needed precautions to make sure a profitable and secure process. This is a complete listing of what you may want and the precautions to take:
Important Instruments:
To disassemble the Dell Latitude 7490, you’ll require the next instruments:
| Important Instruments |
|---|
| Anti-static wrist strap |
| Precision screwdriver set (Phillips #00 and Torx T5) |
| Plastic spudger or pry software |
| Tweezers |
| Magnetic mat or tray |
| ESD (Electrostatic Discharge) bag (non-compulsory) |
Precautions:
To reduce the chance of injury to your laptop computer or harm to your self, please adhere to the next precautions:
- Floor your self: Put on an anti-static wrist strap or contact a grounded steel object earlier than dealing with the laptop computer to stop electrostatic discharge (ESD).
- Energy down and disconnect: Be sure that your laptop computer is turned off and all cables are disconnected earlier than beginning disassembly.
- Work on a clear, flat floor: Select a well-lit and clutter-free workspace to keep away from unintended spills or lack of small elements.
- Keep away from extreme drive: Use mild drive when eradicating elements to stop injury. Should you encounter resistance, reassess the state of affairs and establish the trigger.
- Hold monitor of screws: Place screws in a magnetic mat or tray and hold monitor of their authentic areas to make sure correct reassembly.
Getting ready the Laptop computer
Earlier than commencing the disassembly course of, make sure the laptop computer is powered down and all exterior peripherals are disconnected. Place the laptop computer the other way up on a clear and steady floor. Find the six screws securing the bottom cowl and take away them utilizing a Phillips #00 screwdriver.
Lifting the Base Cowl
As soon as the screws are eliminated, rigorously carry the bottom cowl by inserting a plastic pry software or your fingernails into the seam alongside the sting. Use warning to keep away from damaging the plastic clips holding the quilt in place. Gently carry the quilt till it’s fully separated from the laptop computer chassis.
Warning: Deal with the bottom cowl with care to stop injury to the interior elements, such because the battery or cooling fan.
Observe: The bottom cowl could include extra tabs or clips that require mild maneuvering to launch. Use a plastic pry software to securely disengage any remaining clips.
Eradicating Exterior Elements
Earlier than disassembling the interior elements of the Dell Latitude 7490, it’s essential to take away all exterior elements to make sure security and stop injury.
Step 1: Detach the Energy Wire
Find the facility twine linked to the laptop computer and gently unplug it from the facility supply. All the time maintain the plug, not the twine, to keep away from damaging the wires.
Step 2: Take away the Battery
Slide the battery launch latch positioned on the underside of the laptop computer. Maintain the battery firmly and slide it out of its compartment.
Step 3: Take away the SIM Card and microSD Card (if relevant)
- Find the SIM card slot on the aspect of the laptop computer and insert a SIM ejector software (or a paperclip). Press down gently to eject the SIM card.
- If the laptop computer has a microSD card slot, insert a microSD card ejector software (or a paperclip) and press down gently to eject the microSD card.
| Part | Location | Elimination Methodology |
|---|---|---|
| Energy Wire | Again of laptop computer | Unplug from energy supply |
| Battery | Backside of laptop computer | Slide launch latch and slide out battery |
| SIM Card | Aspect of laptop computer | Insert SIM ejector software and press down |
| microSD Card (if relevant) | Aspect of laptop computer | Insert microSD card ejector software and press down |
Eradicating the Keyboard
To start, you may have to take away the again cowl of the laptop computer. That is accomplished by eradicating the screws that maintain it in place. As soon as the again cowl is eliminated, you may have to disconnect the battery after which take away the speaker meeting.
With the speaker meeting eliminated, you may have entry to the screws that maintain the keyboard in place. Take away these screws after which rigorously carry the keyboard out of the laptop computer.
Be Light with the Keyboard Ribbon Cable
| Step 1: Uncover the Ribbon Cable | Find the ribbon cable connecting the keyboard to the motherboard. It is normally coated by a small plastic protecting cowl. Use a pry software to softly carry the quilt and expose the ribbon cable. |
|---|---|
| Step 2: Disconnect the Ribbon Cable | Flip the small lever on the finish of the ribbon cable’s connector. This lever secures the cable in place. As soon as the lever is flipped, gently pull the cable out of the connector. |
| Step 3: Maneuver the Keyboard | With the ribbon cable disconnected, now you can rigorously carry the keyboard out of the laptop computer body. Maneuver it gently to keep away from damaging the encircling elements or the ribbon cable. |
Detaching the Battery
To detach the battery from the Dell Latitude 7490, comply with these steps:
1. Be sure that the laptop computer is powered off and all cables are disconnected.
2. Slide the battery launch latches positioned on the underside of the laptop computer in direction of the middle.
3. Carry the battery barely from the again of the laptop computer.
4. Slide the battery out of the compartment at an angle.
5. Disconnect the Battery Cable:
Earlier than fully eradicating the battery, it is very important disconnect the battery cable to stop any injury to the motherboard or the battery.
To disconnect the battery cable, comply with these extra steps:
- Find the battery cable connector on the proper aspect of the battery compartment.
-
Utilizing a pair of tweezers or your fingers, rigorously pry open the connector latch and pull the
battery cable free from the connector.
Warning: Deal with the battery cable with care to keep away from damaging the fragile wires.
6. As soon as the battery cable is disconnected, you’ll be able to fully take away the battery from the laptop computer.
Dismantling the Prime Bezel
1. Take away the rubber ft
Use a spudger to pry up the rubber ft on the underside of the laptop computer. There are six ft in complete.
2. Take away the screws beneath the ft
There are six screws beneath the rubber ft. Take away them utilizing a T5 Torx screwdriver.
3. Pry up the underside bezel
Use a spudger to pry up the underside bezel, ranging from the again of the laptop computer. Work your means across the edges till the bezel is unfastened.
4. Carry the underside bezel away
As soon as the bezel is unfastened, carry it away from the laptop computer. Watch out to not injury the wires connecting it to the motherboard.
5. Disconnect the webcam cable
Use a spudger to disconnect the webcam cable from the motherboard. The cable is positioned on the proper aspect of the laptop computer.
6. Pry up the highest bezel
Use a spudger to pry up the highest bezel, ranging from the again of the laptop computer. Work your means across the edges till the bezel is unfastened.
| Screw Dimension | Amount | Location |
| M2x3 | 2 | Rear corners of the highest bezel |
| M2x4 | 6 | Alongside the perimeters and prime of the highest bezel |
| M2x5 | 2 | Close to the entrance corners of the highest bezel |
7. Carry the highest bezel away
As soon as the bezel is unfastened, carry it away from the laptop computer. Watch out to not injury the wires connecting it to the motherboard.
Eradicating the Motherboard Meeting
To take away the motherboard meeting, comply with these steps:
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Disconnect the battery cable from the motherboard.
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Take away the 2 screws that safe the motherboard meeting to the system board.
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Disconnect the next cables from the motherboard:
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Energy cable
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Show cable
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USB cables
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Audio cable
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Digital camera cable
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Keyboard cable
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Touchpad cable
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Fan cable
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Speaker cable
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Microphone cable
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Carry the motherboard meeting out of the system board.
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Place the motherboard meeting on a clear, flat floor.
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Take away the next screws from the motherboard meeting:
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Two screws that safe the battery connector
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Two screws that safe the speaker
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Two screws that safe the fan
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Two screws that safe the microphone
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Two screws that safe the keyboard
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Two screws that safe the touchpad
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Two screws that safe the show
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Two screws that safe the facility change
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Two screws that safe the USB ports
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Two screws that safe the audio ports
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Two screws that safe the digital camera
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Rigorously take away the next elements from the motherboard meeting:
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Battery connector
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Speaker
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Fan
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Microphone
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Keyboard
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Touchpad
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Show
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Energy change
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USB ports
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Audio ports
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Digital camera
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Place the eliminated elements in a secure place.
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The motherboard meeting is now eliminated.
| Screw Dimension | Amount |
|---|---|
| M2x3mm | 10 |
| M2x4mm | 6 |
| M2x5mm | 4 |
Unplugging and Eradicating Cables
Battery Elimination
Earlier than you start disassembling your Dell Latitude 7490, it is important to unplug and take away all cables. Disconnect the AC adapter and every other cables linked to the laptop computer.
Keyboard Elimination
To take away the keyboard, first, find the screws securing it to the chassis. Often, there are two screws on the underside of the laptop computer. As soon as the screws are eliminated, rigorously carry the keyboard upward to launch it from the chassis.
Touchpad Elimination
To take away the touchpad, you may have to detach the battery first. Then, find the 2 screws securing the touchpad to the chassis. Take away the screws and gently carry the touchpad to launch it.
Show Elimination
Eradicating the show is a little more concerned. First, you may have to take away the highest cowl of the laptop computer. As soon as the highest cowl is eliminated, you’ll be able to entry the show meeting. Find the screws securing the show to the chassis and take away them. Rigorously carry the show to launch it.
Backside Cowl Elimination
To take away the underside cowl, first, take away the screws securing it to the chassis. Then, gently carry the underside cowl to launch it.
Motherboard Elimination
To take away the motherboard, you may have to disconnect all cables and connectors hooked up to it. As soon as the cables are disconnected, find the screws securing the motherboard to the chassis and take away them. Rigorously carry the motherboard to launch it.
Cooling Fan Elimination
To take away the cooling fan, you may have to find the screws securing it to the chassis. As soon as the screws are eliminated, rigorously carry the cooling fan to launch it.
Reminiscence Elimination
To take away the reminiscence modules, find the clamps securing them to the motherboard. Gently push the clamps outward to launch the reminiscence modules. Then, rigorously pull the reminiscence modules out of their slots.
Cable Disconnection
After eradicating the required elements, you may have to disconnect all cables and connectors hooked up to the laptop computer. This consists of the facility cable, show cable, touchpad cable, and every other cables linked to the motherboard.
| Cable | Location |
|---|---|
| Energy Cable | Related to the motherboard |
| Show Cable | Related to the show meeting |
| Touchpad Cable | Related to the touchpad |
| Different Cables | Varies relying on the particular laptop computer mannequin |
Accessing Inside Elements
1. Put together the Workspace
* Guarantee a clear, well-lit, and anti-static work atmosphere.
2. Take away the Battery
* Find the battery launch latch on the underside of the gadget.
* Slide the latch to launch the battery and carry it out.
3. Take away the Again Cowl
* Establish the screws securing the again cowl (sometimes 9 screws).
* Use a Phillips #0 screwdriver to unscrew them.
* Rigorously carry the again cowl off the gadget.
4. Disconnect the Show Cable
* Use a plastic spudger to softly pry up the show cable connector.
* Pull the cable straight as much as disconnect it.
5. Take away the Show
* Carry the show meeting up and away from the gadget.
6. Disconnect the Battery Cable
* Find the battery cable connector on the motherboard.
* Use a plastic spudger to pry up the connector.
* Pull the cable straight as much as disconnect it.
7. Take away the Warmth Sink
* Unscrew the screws holding the warmth sink in place (sometimes 4 screws).
* Rigorously carry the warmth sink off the motherboard.
8. Take away the Motherboard
* Unscrew the screws holding the motherboard in place (sometimes 10 screws).
* Gently carry the motherboard out of the gadget.
9. Accessing the Fan and Cooling System
* The fan and cooling system may be accessed by eradicating the next elements:
* Warmth sink
* Energy button board
* Speaker module
* Keyboard
| Part | To Take away |
|---|---|
| Warmth sink | Unscrew the screws holding it in place and carry it off. |
| Energy button board | Disconnect the cable and take away the screws holding it in place. |
| Speaker module | Disconnect the cables and take away the screws holding it in place. |
| Keyboard | Disconnect the cable and take away the screws holding it in place. |
Reassembling the Dell Latitude 7490
After getting reattached the battery, you’ll be able to start reassembling the Dell Latitude 7490.
Begin by aligning the underside case with the highest case.
- Make it possible for the hinges are lined up correctly.
- Press down on the underside case till it snaps into place.
Subsequent, reattach the screws that you simply faraway from the underside case.
- Use a Phillips #00 screwdriver to tighten the screws.
- Make it possible for the screws are tightened securely, however don’t overtighten them.
Lastly, reattach the show meeting to the underside case.
- Align the show meeting with the underside case.
- Press down on the show meeting till it snaps into place.
Listed here are some extra ideas for reassembling the Dell Latitude 7490:
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| After getting reassembled the Dell Latitude 7490, you’ll be able to energy it on and check it to make it possible for it’s working correctly. |
How To Take Aside Dell Letitude 7490
To take aside a Dell Latitude 7490, you have to the next instruments:
- A Phillips #0 screwdriver
- A Torx T5 screwdriver
- A plastic spudger
After getting gathered your instruments, comply with these steps:
- Take away the six screws on the underside of the laptop computer utilizing the Phillips #0 screwdriver.
- Pry off the underside cowl utilizing the plastic spudger.
- Disconnect the battery cable by gently pulling it straight up from the motherboard.
- Take away the 4 screws that safe the heatsink to the motherboard utilizing the Torx T5 screwdriver.
- Carry the heatsink off of the motherboard.
- Disconnect the fan cable from the motherboard.
- Take away the 2 screws that safe the fan to the heatsink utilizing the Phillips #0 screwdriver.
- Carry the fan off of the heatsink.
- Take away the 4 screws that safe the motherboard to the chassis utilizing the Torx T5 screwdriver.
- Carry the motherboard out of the chassis.
Individuals Additionally Ask
How do I take away the keyboard from a Dell Latitude 7490?
To take away the keyboard from a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the highest of the keyboard
- Three screws on the underside of the keyboard
After getting eliminated the screws, you’ll be able to carry the keyboard up and away from the laptop computer.
How do I change the battery in a Dell Latitude 7490?
To switch the battery in a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the underside of the laptop computer
After getting eliminated the screws, you’ll be able to carry the battery out of the laptop computer.
How do I improve the RAM in a Dell Latitude 7490?
To improve the RAM in a Dell Latitude 7490, you have to to take away the next screws:
- Two screws on the underside of the laptop computer
- One screw on the highest of the laptop computer
After getting eliminated the screws, you’ll be able to carry the quilt off of the laptop computer and entry the RAM slots.
